It's impossible to get an explanation that makes sense from a flat earther because they just repeat paradoxes they heard or read online that they don't even understand themselves.
they like to argue there's "no curvature" but if that was true you could see the sun across every state in the us until it goes down. When I drove from Co to Ca and back you can't see the sun when it's still up in CA if you're in CO.
Its like saying the Balls on a pool table are round so the Table HAS to be round too. Its weird when it comes to planets, because all the live streams, or pictures we have gotten from NASA on Planets has been CGI so you can't explain it, and in a telescope they all look like different color stars, and not some big ass solid thing
First Nasa says its a sphere and we get the "Blue Marble" picture, then they say its an oblique shaped sphere, but the past 20 years the "official" picture has been a perfect circle? lol it might just be a crack rock..